County



Wag/4 a- N. PETERS, P HER, WASHINGTUN. D C.

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EVEN KOON S, OF EUNKSTOWN, MARYLAND, ASSIGNOR TO ELIAS EMMERT, OFWASHINGTON COUNTY, MARYLAND.

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TO ALL WHOM IT MAY OONCERN:

Be it known that I, EVEN` KOOS, of Funkstown, in the county ofWashington, and State of Maryland, have invented a new and usefulimprovement inl Tuyeres or Fire-Irons; and I do hereby declare that thefollowing is a full and exact description thereoreference being had tothe accompanying drawings, and to the letters of reference markedthereon.

My invention consists in a swinging or hinged plug or valve forregulating thev blast through a tuyere or fire-iron, land also in a newarrangement for opening and loosening the box or air-chamber below thet'uyere. In the accompanying drawings- Figure 1 is a top view of myimproved tuyere.

Figure 2 is a' vertical section of the same.

The general construction of my tuyere or fire-iron may be the same asthat already patented by me. But instead of using the conical plugdescribed in that patent, I propose to cast the upper face of the tuyerein one piece,.with two sets of openings, Artaud B, as seen in iig. 1. Inthe upper part of the air-chamber I have arranged a swinging plug orvalve, i0, fig. 2, so hinged that it may swing down, as seen in redlines. This valve is moved by means of a jointed wirler rod, D, providedwith a knob, H. When the valve is up it closes the outer openings in theface of the tuyere, as seen in g. 2, whilst the diminished blast passesthrough the hollow I centre C of the plug, and when down there is a fullblast. The cap E is made removable, in order to facilitate the clearingof the air-chamber GrV of einders, ashes, and other matter which isliable to fall through the air openings A B. The form of theabove-described devices may be somewhat varied without departing from myinvention, so long as the result is substantially the same. I do notbroadly claim a swinging valve in the air-chamber, but confine my claimsto such valve when used to close air-passages in the top of the chamber.

Having thus fully described my invention, what I claim, and desire tesecure byLetters Patent of the United States, isf-- 1. In combinationwith blast openings in the bed of a forge or furnace, I claim theabove-described swinging valve oroplug, constructed and operatedsubstantially as set forth.

n 2. I claim the combination of the cap E, rod D, and hinged valve orplug C, constructed substantially as specified.

' EVEN KOONS.

Witnesses:

B. F. KELLEB 'Ezm SHANEBEMER.

